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Finding the Fourth Proportional to 111,316.80, 166,991.40 and 36,418.80

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Solution

The fourth proportional to 111,316.80, 166,991.40 and 36,418.80 is: 54,633.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,316.80 : 166,991.40 = 36,418.80 : x
  2. Step 2: Convert to fraction form
    111,316.80/166,991.40 = 36,418.80/x
  3. Step 3: Cross multiply
    111,316.80x = 166,991.40 × 36,418.80
  4. Step 4: Simplify right side
    111,316.80x = 6,081,626,398.32
  5. Step 5: Solve for x
    x = 6,081,626,398.32/111,316.80
  6. Step 6: Final answer
    x = 54,633.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.